Planodraptl co



N. V. DYER.

SKlVlNG MACHINE.

APPLICATION FILED NOV-18.1916.

1,308,776. Patented July 8, 1919.

5 SHEETS-SHEET 1.

by K

In: COLUMBIA PMFOGRAPH c0., WASHINGTON. D. c.

N. V. DYER.

SKIVING MACHINE.

APPLKCATION FILED NOV-18,1916- 1,308,776. Patented July 8,1919.

5 SHEETS-SHEET 2- N. V. DYER.

SKIVING MACHINE.

APPLICATION FILED NOV-18. 1'916.

1,308,776. I v Patented July 8, 1919.

5 SHEETS-SHEET 3.

THE COLUMNA PLANOGRAPH-Cm. WASHINGTON. D. c.

N. V. DYER.

-SKIV|NG MACHINE.

APPLICATION FILED NOV. 18. 1916.

1,308,776. Patented July 8, 1919.

5 SHEETS-SHEET 4.

THE COLUMBIA PLANOGRAPH cu WASHXNdTON, D. c.

N. V. DYER.

SKIVING MACHINE.

APPLICATION men NOV-18.1916.

5 suns-smear 5.

Patented July 8 ml: COLUMBIA PUNOORAPH cl) WASHINdTON, D. c.

citizen of the United States, and resident of UNITED STATES PATENT OFFICE.

NEWELE V. DYER, 0F HOLBROOK, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENTS, T0 UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A. CORPORATION OF NEW JERSEY.

SKIVING-MACH INE. 1'

Specification of Letters Patent.

Patented July 8, 1919.

Application filed November 18, 1916. Serial No. 132,191.

To all whom it may concern:

Be it known that I, NEWELL V. DYER, a

I-Iolbrook, county of Norfolk, State of Massachusetts, have invented an Improvement in Skiving-Machines, of which the following is a specification, like characters on the drawing representing like parts.

This invention relates to skiving machines and is herein illustrated as embodied in a machine for skiving the edges of parts of uppers of boots and shoes.

Hitherto, except when the mechanism of my prior Patent No. 1,138,645 has been used,

it has been necessary to adjust certain parts of leather skiving machines whenever a scarf of diflerent width or angle was desired. With the patented mechanism it is possible toproduce two scarfs of different width without adjusting any part of the machine. If, however, a scarf of different angle is desired, adjustment is necessary. In the manufacture of certain high grade shoes it is desirable to produce three or four difi'erent scarfs upon the same piece of leather; and to accomplish this certain adjustments have been necessary or else the pieces of leather had to besubjected to skiving operations on two or more machines.

One feature of the present invention comprises a machine having two skiving mechanisms located in proximity to each other and improved means for making the initial adjustments. In the illustrative machine the skiving mechanisms are locatedat different levels so as to permit ready presentation of the work first to one and then to the other, and the mechanism for adjusting the knife shafts are located on opposite sides of said shafts. With this construction two scarfs of different angles or bevels may be produced without any change of adjustment.

Another feature of the machine comprises a construction in which the feed mechanism is supported on a movable member so that and the knife grinding mechanism. This construction greatly facilitates accurate grinding of the knife as well as'the removal of a worn knife and its replacement by a new one.

A further feature of the invention com prises improved means for driving the knife and feed mechanism by means of belts.

These and other features of the invention, including certain details of construction and combinations of parts, will be described as embodied in an illustrative machine and de fined in the appended claims.

In the drawings:

Figure 1 is a front elevation of a skiving machine in which the invention is embodied;

Fig. 2 is a plan of the machine; I

Fig. 3 is a side partial elevation thereof as viewed from the left of Fig. 1;

Fig. 4 is a detail plan with parts broken away and showing the supplemental frame or arm released and swung with its parts outward from the main frame;

Fig. 5 is a vertical section on line 55 of Fig. 3;

Fig. 6 is an enlarged detail with portions broken away of, parts relating to the feed rolls,the skiving knife and associated parts illustrating more particularly the mechanism for adjusting one of the knives;

Fig. 7 is an enlarged horizontal detail on line 77 on Fig. 1;

Fig. 8 is an enlarged elevation of the skiving knife grinding mechanism with portions broken away to illustrate the details thereof, and

. Fig. 9 is a detail elevation of the driving shaft frame with portions shown broken away to illustrate the adjustment features. In the drawings 20 represents a suitable frame provided with a base 21 adapted to be secured in any convenient or desired manner to a table, bench, or other foundation. This frame is also provided at the top thereof with a horizontally projecting arm 22 which is bifurcated at 23 to form the sup-- porting portions 2 1 and 25 adapted to cooperate with a supplemental frame :27. The supplemental frame is pivoted to the under side of the supporting portion 24 by means of the pivot bolt 28 provided with the enlarged head 29 resting in a proper counterbore in said supporting portion, and beneath said supplemental frame I provide on said bolt a nut 30 or the like to engage the under face of said frame. The opposite end of said supplemental frame may therefore be swung about the order that the supplementary frame may.

be securely clamped to the under face of said portion 25.

The supplemental frame 27 is adapted to' support the feeding and gaging mechanisms together with the driving means for the feeding mechanism as will now be described. This supplemental frame is provided with bearings 3737 and 3838, and rotatable thereinare the shafts 39 and 40 respectively. The shaft '39 has secured thereto in any suitable manner a gear 42 which meshes with an idler gear 43 on a stud shaft 44 projecting from the aforesaid supplemental frame. The shaft 40 is likewise equipped with a gear 45 which meshes with the idler gear 43 so that when the shaft 39 is rotated by the pulley 47 secured thereto, the shaft 40 will also rotate and in the same direction as the shaft 39. To the shafts 39 and 40 are secured the feed rolls 48 and 49 respectively with work supporting faces 50 and feed faces 51. The faces 50 are frusto-conical while the feed faces 51 are cylindrical and offset from the faces 50 by divei-ging or angular shoulders 52.

Cooperating with the feed rolls 48 and 49 and engaging the feed faces 51 thereof are relatively thin rotatable feed disks 55 and 56 respectively having their shafts 58 and 59 parallel one with the other and both perpendicular to the shafts 39 and 40. For the shaft 58 are provided bearings 61 and 62in the supplemental frame 27 with a tie piece or pillar 631connecting said bearings; and bearings 65 and 66 forthe shaft 59 are also formed in the supplemental frame 27. Each shaft 58 and 59 is surrounded by a spring 68 having one end thereof engaging a collar 69 secured to said shaft in any suitable manner, as by a set screw or the like, the other end bearing against the under surface of the bearing 62 or 66, each spring normally forcing its collar 69 downward. The set screws permit adjustment of the collars along the shafts to increase or decrease the tension of said springs. Pulleys 71 and 72 are splined to the shafts 58 and 59 respectively above the bearings 62 and 66. A crossed belt 73 engages the pulley 71, is then passed over a pair of idler pulleys 75 after which it is Wrapped about the driving pulley 76 secured in any desired manner to the shaft 39. A bracket; 78 secured to or integral with the supplemental frame 27 is provided with a stud shaft 80 on which the idler pulleys 75 are rotatable. A similar stud shaft 82 is also located on the bracket 78, and rotatable thereon are another pair of idler pulleys 83. A belt 84 1 passes about the pulley 72 thence over said ing mechanism and grinding mechanism which are carried by the main frame of the machine.

To the rear of the feed rolls 48 and 49 are skiving knives 90 and 91 respectively carried by inclined shafts 92 and 93 to the upper ends of which are keyed pulleys 95 and 96. These shafts are inclined in substantially the same manner and may be adjusted in different directions as will now be described. Referring to Fig. 6, it will b seen that the knife shaft 92is rotatable in bearings 97 on an adjustable head 98. This head is provided with inclined ways 100 adapted to engage with and slide on the co-acting ways 101 on the swiveled head 102. A feed screw 103 is held against longitudinal movement at one end of the said swiveled head and cooperates with the screw threaded lug 104 on the adjustable head 98 to enable the latter to be moved up and down on the swiveled head. The swiveled head 102 is pivoted at 106 between the ears or guiding portions 107 on a translating head 108 having horizontal ways 109 to engage co-acting ways 110 on a cross head 111, the shape of the ways being such as to form a dovetail connection. The ways 109 and 110 extend laterally in order that the translating head 108 may be movable in a pathsubstantially parallel to the axis of the feed roll 48 so that the knife 90 may be moved along the face 50 of said roll. 'The translating head 108 is provided at the bottom thereof with a translating rack 115 adapted to mesh with'and be moved by a translating gear 116' rotatable in suitable bearings in the cross head 111 and provided with a shaft 117 having a knurled head 118.

ing 126 secured to the base 122 and is adapted to coeperate with a screw-threaded bore 127 through the cross head 111 to enable the latter to be moved with respect to the former carrying with it the other associated parts hereinbefore described to adjustthe knife 90 forward and backward. With the construction thus far described manipulation of the screw 103 raises or lowers the knife and manipulation of the pinion 116 an'd-ofthe screw 125 effects respectively an adjustment of the knife longitudinally of thefeed roll and an adjustment toward and from the operator. In order to vary the angular inclination of the knife about the pivot 106, the head 102 has a slot 130 the walls of which are engaged by "a stud or pin 131, said stud being eccentrically mounted in one face of a disk 132 rotatably mounted in abore in one of the ears 107. A shaft 134 and knurled head 135 furnish means for turning the disk to effect angular adjustment of the head 102 and consequently of the knife. When the disk 132 is rotated, the

stud will throw the free end of the swiveled head upward aboutthe pivot 106 thereby changing the angular relation of the swiveled head 102 with respect to the translating head 108 and also changing the angular relation of the knife 90 with respect to theface 50 of its bed roll. By this means the. width or angle of a scarf may be changed. In order to lock the swivelcd head 102 to thetranslating head 108 in any adjusted relation, a locking screw 138 is tapped through one car 107 of the translating head 108 and bears against one face of the swiveled head as will be seen in Fig. 7. k

The shaft 93 of the knife 91 is rotatably supported in bearings 140 forming a part of the adjustable head 141 vertically slidable at 142 on the swiveled head 143. The swiveled head 143 is provided with an adjusting screw 144 held against longitudinal movement with respect thereto and 006perating with a lug on the adjustable head 141 in the same manner as described for the adjustable head 98 and swiveled head 102. The swiveled or pivoted head 1.43 is pivoted at146 to the translating head 147, and the mounting of the pivotedhead is in general similar to that of the pivoted head 102 of the knife 90 except .that, whereas in the head 102 the slot 130 is located between the pivot 106 and the knife shaft 92, the relative positions of the pivot 146 and the slot 149 are reversed in the head 143, the pivot 146 being located between the slot 149 and the knife shaft 93. An eccentric adjusting stud 148, similar to the eccentric adjusting stud 131 is positioned to operate in the slot 149 to effect angular adjustment of the knife. Although the mechanisms for adjusting the knives are similar, it should be noted that their locations relatively to their respective knife shafts are different in that they are located on opposite sides of the knife shafts. The translating head 147 is slidable at 151 on the cross head 152 and the former is provided with a translating rack 153 cotiperating with the translating gear 154 fixed to a shaft 155' rotatable in bearings in the latter head and'provided with a knurled adjusting head156. The cross head 152 is slidable at 158 on the base 159 secured to the supporting portion 25 of the frame of the machine as described for the base 122. Relative adj ustment is obtained between the cross head 152 and the base 159 by means of a feed screw 161 tapped through the former and held against longitudinal movement in the latter. The knife 91 may thus be adjusted similarly to the knife 90.

As the knives 90 and 91 become chill through use they must be frequently sharpened while revolving at high speed. To accomplish this without changing the angle of the cutting edge thereof and irrespective of their relative angularity to their respective bed rolls the following grinding means are provided. Swiveled on the pivot 106 is a grinder frame 165 provided with a segmental slot 166 through which is extended a clamp screw 167 having a suitable shoulder to engage the outer face of said frame 165, said screw being threaded into one guiding portion 107 forming the rear part of the translating head 108. There fore, whatever lateral movement is imparted to the knife 90 is also imparted to the grinder frame 165 which supports the grinding or sharpening tool. The grinder frame 165 is provided with bearings 168 and 169 the former adapted to receive therein the grinder shaft 171 and the latter forming a guide for the shaft sleeve 172 which forms the upper bearing surface for the said shaft. At the top of the shaft is a swiveled shoulder cap 173, and interposed between said cap and the sleeve 172 is a spring 175 normally tending to throw the shaft upward until a clutch collar 177, which is fast to the shaft, engages the lower end of said sleeve thereby limiting the upward movement of said shaft. The clutch collar is provided with a set screw 178 engaging the shaft to provide means whereby the position of the collar maybe changed to increase or decrease the tension of the spring 175. This collar serves also to limit the extent of upward movement of said shaft and to drive or rotate the latter when the lugs 180 on said collar are brought into engagement with the notches or holes 181 in the face of the idler driving pulley 182 which is freely revoluble on the shaft. This driving pulley 182 is loosely mounted on the shaft 171 so that it may rotate or move up an d down thereon and is held substantially in the position shown only by the tension of the belt 229 presently to be described. This construction obviates the necessity which might otherwise exist of providing certain guide pulleys for the belt, and at the same time maintains the pulley in position with suflicicnt firmness to cause it to rotate the grinder when the lugs 180 are moved into engagement with the holes 181. The purpose of the sleeve 172 is to permit adjustment of the shaft 171 so as to regulate the distance through which the shaft must be pushed downwardly by pressing upon the cap 173 [before the grinder 186 contacts with the knife. To this end the sleeve is provided with a rack 188 with which meshes a pinion 189, the pinion being fast on a shaft 190 one end of which carries a knurled head by which it may be turned. After the shaft has-been adjusted into the position desired by the operator, the grinding of the knife is accomplished by' pushing vdown on the cap 17 3 Or, if desired, the whole downward movement of the grinder shaft may be ef-' fected by turning the pinion 189. Since the,

grinder frame 165 is movable on the pivot 106 with the knife 90, any transverse or lateral movement imparted to the latter is also imparted to the former, and the grinder 186 is always in a proper relation above'the knife. In addition the slot 166 and clamp screw 167 permit setting or clamping the grinder mechanism in any desired angular relation to the knife 90 so as always to pro duce a relatively thin sharpened edge thereon. The result is that the knife is at all times properly sharpened producing a clean out along the line of the scarf. It will be noted that, as the entire sharpening or grinding mechanism is to the rear of and above the knife and the means for adjusting the grinder 186 are at the top of the mechanism, there is no necessity for the operators hands to approach too closely to the rapidly revolving knife 90, thus obviating the danger of accidental contact of the operators fingers with the knife.

The knife 91 is provided with grinder mechanism similar in construction to that described for the knife 90 except that, instead of the shaft for the grinder 194 being inclined toward its fulcrum or pivot point 146 on the translating head 147, the direction of inclination is away from the latter and substantially parallel with the shaft 171 of the grinder 186 or parallel with the shaft 93 of the said knife 91. Another difference in construction consists in having the adjusting screw 195 corresponding to 167 located beyond and to the left of the pivot 146. and not interposed between the pivot and driving shaft as illustrated in Fig. 8.

When it is desired to grindthe knife or knives the clamp nut 33 is unscrewed or released allowing the end of the supplemental frame 27, which is provided with the slot 31, to be detached from the supporting portion 25, after which the supplemental. frame is swung about the pivot bolt 28 away from the front of the machine, as indicated in Fig. 4, thereby moving the feed mechanisms out of eoijperative relation to the knives 90 and 91 and their grinding mechanisms and permitting access to the knives. This feature s high y import nt in t t complete access is, had to all of the knife and grinder parts both for sharpening and repairing or renewal. There is also less danger of the clothing or the hands of the operator being drawn through the feed mechanism to the knife during the closeinspection which is necessary during the grinding operation. Then too, for the purpose of renewal or replacement of the said knives, no other parts of the machine need be disassembled or thrown out of adjustment as the knives are clearly exposed with no intervening structure to interfere with their manipulation. V

The means for rotating all the driving pulleys described heretofore consists of the shaft 21.2 rotatable in the bearin s 213 at opposite sides of an adjustable and floating yoke-like frame 214 located to the rear of the frame 27, see Figs. 3, 5 and 9. Keyed to said shaft 212 in any suitable manner is a main driving pulley 215. A driving pulley 218 on the shaft 212 is connected to the pulley 47 by means of the belt 219. Driving pulleys 222 and 223 on said shaft are connectedby belts 224 and 225 to the pulleys 95 and 96 respectively. Also on said shaft are pulleys 227 and 228 connected by belts "229 and 230 to the pulleys 182 on the grinder shafts 171 to drive the grinders 186 and 194. The yoke frame 214 is provided at the bottom with a pair of forked portions 232 spanning the frame 20 to engage with a pin 233 or the like. The upper portion 235 of the yoke frame is channel-shaped to pass over both sides of the frame 20 to provide a means of support and a convenient cooperating part for an adjustment feature. At the top of the frame 214 is providedian adjusting screw 237 tapped therethrough and having the end resting in a recess in a sliding saddle block 238. A lateral adjusting screw 239 is tapped through a lug 240 fast to the main frame and bears against an upright 241 at the forward end of the saddlev block. A spring 243 interposed between the stationary lug 244 and the upright 245 on the sliding block tends at all times in conjunction with the pull of the belts to swing the saddle blockand upper end of the yoke frame 214 forward against the screw 239, the spring 243 providing at the same time a convenient yielding means against the force of which the saddle block may be adjusted to take up any slacker looseness in the belts.

Gages or guiding means are necessary in order that the work may be properly guided on the bed roll in correct relation to the knives 90 and 91 for a determined width of scarf. Therefore to thefront face of the supplemental frame 27 there is secured ad-' 'jacent to each feed roll a depending gage order that the gage may be adjusted longitudinally of the rolls 48 and 49. Horizontal ears 255 and 256 project from each gage at different heights; and each ear is provided with a bore, bearing, or the like to receive a vertically slidable rod 258 at the bottom of which is a resser-foot 259 adapted to rest upon the leather just forward of the cutting edges of the knives. Each presserfoot has a guiding stem 260 slidable in the end of the car 256 so that the presser-foot can not rotate or move except vertically. At the top of each rod 258 is a nut 261 screwed thereon and arranged to rest on the top of the ear 255 in order to limit the downward movement of the rod 258 and presser foot 259. By means of the adjusting nuts 261,

' the presser feet may be brought into very close relation to the feed rolls 18 and 4:9 or may be more or lessremoved therefrom to accommodate different thicknesses of leather. In order to maintain a pressure of the presser foot against the leather there is provided above each car 256 a nut 263, and interposed between the latter and the ears 255 are coiled springs 264 encircling the rods 258. These springs, bearing against the ears 255 and the nuts 263 cause sufficient clownward pressure to control properly the leather and to guide the same to the rapidly revolving knives 90 and 91.

In Fig. 6 there is shown attached to the bearing 97 a portion of a guard structure for the knife comprising a U-shaped member having depending legs 269 and 270, the leg 270 being in two parts hinged together at 271, the upper stationary part of the leg 270 having a stop 272 against which the lower hinged part is normally held by gravity. By lifting up the lower hinged part of the leg 270 an oil stone or other bur-removing member may be applied to the under side of the edge of the knife at a point adjacent to the lower end of the hinged portion.

In the use of the machine, the variousadjustments of the feed, gage and knife mechanisms having been made, the operator first skives one edge of a piece of leather or other material on one of the skiving mechanisms, and then another edge on the other skiving mechanism. It should be noted that these mechanisms are spaced apart in the general direction in which the feed roll shafts extend and are located atdifferent levels. This construction and arrangement permits a piece of work to be fed without interference to either mechanism and to be swung freely when a curved edge is encountered.

This application is a continuation, so far as common subject-inatter is concerned, of

my prior application Serial No. 58,571, filed October 29, 1915.

Although the invention has been set forth as embodied in a particular machine, it

Having thus described my invention,

what I claim as new and desire to secure by Letters Patent is:

1. In a skiving machine, a main frame, a plurality of independently operated skiving knives upon said frame, a supplementary frame pivoted on said main frame, and a plurality of feed mechanisms upon said supplementary frame adapted respectively to cotiperate with said knife mechanisms.

2. Ina skiving machine, a main frame, a plurality of skiving knives thereon, a supplementary frame having one end thereof pivoted to said main frame and the other end detaohably clamped thereto, and feed roll mechanisms rotatable in said supplementary frame and cotipcrating with said knives.

3. In a skiving machine, a main frame, a plurality of skiving knives thereon, a supplementary frame having one end pivoted to a portion of said main frame and the opposite end detachably clamped to another portion of the main frame, and -a plurality of feed roll mechanisms rotatable in said supplementary frame and arranged to co6perate with one of said knife mechanisms.

4. In a skiving machine, a main frame, a plurality of skiving knife mechanisms thereon, a supplementary frame having one end pivoted to a portion of the main frame and the other end detachably secured to another portion of said frame, a plurality of feed roll mechanisms revoluble in said supplementary frame each cotiperating with a skiving knife mechanism, a feed disk for each feed roll, and driving means on said main frame cotiperating with driving means on said feed rolls for rotating said feed rolls and feed disks.

5. In a skiving machine, a main frame, a plurality of rotatable skiv ing knives there on, a supplementary frame having one end pivoted to a portion of said main frame and the opposite end detachably secured to another portion of said main frame, a

plurality of feed rolls rotatable in said sup- 1 plementary frame on horizontal axes each cotiperating with a skiving knife, and a feed disk cotiperating with each feed roll, said feed disks being mounted on vertical axes.

6. In a skiving machine, a main frame, a plurality of rotatable skiving knives thereon a supplementary frame having one end pivotedto a portion of said main frame and the opposite end detachably secured to another portion of said main frame, a plurality' of horizontally disposed feed rolls rotatable in said supplementary frame each coiiperating with a skiving knife, a feed disk mounted on a vertical axis cotiperating With each of said feed rolls, and driving means on said main frame cooperating With driving means on the supplementary frame to rotate said feed rolls and said feed disks.

7. In a skiving machine, a main frame, a plurality of skiving knife mechanisms thereon, a supplementary frame having one end thereof pivoted to a portion of the main frame and the other end thereof detachably secured to another portion of said frame, a plurality of spring pressed feed members revoluble in said supplementary frame each cooperating With askiving knife -mechanism, and driving means on said main frame cooperating With driving means on said feed members for rotating the same.

8. In a skiving machine, a main frame, a plurality of adjustably mounted androtatable skiving knives located between different portions of said frame, a pluralit i of feed rolls, and a support for. the rolls pivoted adjacent to one knife and provided With means adapted to be detachably secured to said frame adjacent to another knife each feed roll being adapted to cooperate With a ski-ving knife. i

9. In a skiving machine, a main fr me, a plurality of adjustable and rotatable skiving knives thereon, feed rolls for the knives, a support for the rolls pivoted adjacent to one knife, shafts for the feed rolls, means for driving one shaft from the other, a feed disk for each feed roll, and means connecting one of said feed roll shafts to said feed disks to rotate the latter.

10. In a skiving machine, a main frame, a plurality of adjustably mounted and rotatable skiving knives thereon, a supplementary frame having one end thereof pivoted to one portion of said main frame and the opposite end thereof detachably secured to another portion of said mainframe, a plurality of horizontal shafts rotatable in said supplementary frame, a feed roll on each shaft cooperatingWith a skiving knife, a feed disk for each feed roll, vertical shafts by Which the feed disks are carried, and driving means interposed between one of said horizontal shafts and all of said vertical. shafts-for rotating the latter.

11. In a skiving machine, a plurality of knife mechanisms, a sWiveled frame and feed mechanisms and gage mechanisms mounted thereon, said sWiveled frame being adapted to move the feed and gage mechanisms into and out of cooperative relation with said knife mechanisms.

12. In a skiving machine,a main frame, a plurality of knife mechanisms thereon, an adjustable grinder mechanism for each knife mechanism, a sWiveled frame-on said main frame, and rotatable feed mechanisms supported by said svviveled frame, said latter frame being adapted to be moved to bring the feed mechanisms into'and out of cooperative relation with the knife mechan sms.

13. In a skiving machine, a mam frame,

a plurality of skiving knife mechanisms adjustable grinderinechanism for each knife mechanism, a frame sWi-veled on said main frame, rotatable feed mechanisms supported by said siviveled frame, said latter frame being adapted to be moved to carry the feed mechanisms into and out of cooperative relation with the knife mechanisms, an'dmeans for rotating said grinder, said "knife and said feed mechanisms.

15. In a ski'ving machine, a main frame, a plurality of skiving knife mechanisms swiveled thereon, a grindermechanism cooperating vvith each knife mechanism, frame 'sWiveled' on said mainframe, rotatable feed mechanisms supported by said swiveled frame eac'hmechanism cooperating With a knife mechanism, and means for rotating said grinder, said knife and said feed mechanisms. e

16. In a skivingmachine, a'main frame a plurality of skiving knife mechanisms sWiveled thereon, a grinder mechanismcooperating with each knife mechanism, a frame swiveled on; said main frame, rotatable feed mechanisms supported by said siviveled frame each mechanism cooperating With a knife mechanism, an adjustable frame and driving means for said grinder, said knife and said feeding mechanisms mounted on said adjustable frame.

17. In a skiyi machine, a'main frame, a plurality oflmife mechanisms thereoman adjustable grinder mechanism for each knife mechanismfa frame svviveled' on said main frame, rotatable'feed mechanisms supported by said svviveled frame said latter frame being adapted tobe moved to carrythe feed mechanisms into and out of cooperative relation v'vith the' knife mechanisms, an adjiistable frame and driving means thereon for said grinder, said knife and said feeding mechanisms, l 18. In a skiving machine,'a main frame, a supplemental frame pivoted thereon, a floating frame mounted upon said main frame, a 'skiving knife upon said main frame, feed roll mechanism upon said'supplemental frame, and driving mechanism upon said floating frame cooperatiiig avit'h sald knlfe mechanism and said feedniechw nism.

19. In a skiving machine, a main frame, a supplemental "frame pivoted thereon, a

and driving mechanlsm upon said floating frame cooperating with said knife mechanlsms and said feed mechanisms.

' 20. In a sklvmg machlne, a mam frame,

a supplemental frame pivoted thereon, a

floating frame mounted upon said mam frame, an adjustable skiving knife upon said main frame, an adjustable feed roll mechanism upon said supplemental frame, and driving mechanism upon said floating frame cooperating with said knife mechanism and said feed mechanism.

21. In a skiving machine, a main frame, a frame swiveled thereon, a floatin frame mounted upon said main frame, a plurality of adjustable skiving knives upon said main frame, a plurality of feed roll mechanisms driving mechwith said adjustable knives and said feed mechanisms.

22. In a skiving machine, a main frame, a skiving knife mechanism pivoted thereon, a feed roll mechanism pivoted on said main frame, pulleys on said knife mechanism and said feed-mechanism, a drivinv pulley frame pivoted to said main frame, driving pulleys Y mounted thereon, and belts cooperating with the driving pulleys, the skiving knife pulleyand the feed pulley.

" a skiving knife mechanism thereon, feed roll 23. Ina skiving machine, a main frame,

I mechanism for said knife mechanism, a frame a'djustably mounted on said main frame, and driving mechanism on said ad ustable frame cooperatin with said kn1fe mechanism and said feed roll mechanism for rotating the knife and feed roll.

'24. In a skiving machine, a main frame, skiving lmife mechanism thereon, feed roll mechanism for said knife mechanism, a frame having one end thereof swiveled to said main frame and the opposite end thereof adjustable relative to said knife and feed mechanisms, and driving means on said lastmentioned frame cooperating with said knife and feed mechanisms for rotating the knife and feed roll.

25. In a skiving machine, a main frame, skiving knife mechanism thereon, feed roll mechanism for said knife mechanism, a yoke-like frame having one end thereof pivoted to said main frame, means on the opposite end thereof for cooperating with said main frame to adjust the yoke-like frame relatively to said lmife and feed mechanisms, and driving means on said latter frame cooperating with said knife and feed roll mechanism to rotate the knife and feed roll.

26. In a skiving machine, a main frame,

a rotatable skiving knife, pivoted means supporting said skiving knife and interposed between the same and said frame, mechanism for adjusting the said pivoted means, and adjustable means between the pivoted means and said knife for adjusting the knife relatively to the pivoted means.

27. In a skiving machine, a main frame, a skiving knife mechanism pivoted thereon, a grinder swiveled about the pivot of the skiving knife, means for adjusting the rinder toward and from the said skiving knife, and resilient means for returning the grinder to its normal inoperative position.

28. In a skiving machine, a main frame, skiving knife mechanism pivoted thereon, a grinder swiveled about the pivot of the skiving knife, means for adjusting the grinder toward and from the skiving knife, resilient means for returning the grinder to the normal inoperative position, and clamping means interposed between said grinder and said skiving knife to secure the former in adjusted relation to the latter.

29. In a skiving machine, a main frame, a rotatable skiving knife, pivoted means supporting said skiving knife and interposed between the same and said frame, mechanism for adjusting said pivoted means, a supplementary frame pivoted on said main frame, feed roll mechanism rotatable in said supplementary frame, an adjustable yoke frame on said main frame, and driving means on said yoke frame cooperating with said skiving knife and feed roll mechanism for rotating the knife and feed rolls.

30. A machine of the class described having, in combination, two spaced supports, two skiving knives, knife shafts located in the space between the supports and inclined in substantially the same manner, bearings for the shafts carried by the supports, feed mechanisms cooperating respectively with the knives, and means located respectively on the same sides of the shafts as are the supports for adjusting the knife shafts and knives similarly with respect to their re-- spective feed mechanisms.

31. A machine of the class described having, in combination, a frame having two supporting portions spaced apart vertically and horizontally, knife shafts carried by said supports, knives on said shafts, feed mechanisms cooperating respectively with the knives, and means located on opposite sides of the knife shafts for adjusting the knife shafts and knives with respect to their respective feed mechanisms.

32. A machine of the class described having, in combination, a frame adapted to support two skiving knives in spaced relation, knife shafts having substantially the same inclination, feed mechanisms cooperating respectively with the knives, and means located on opposite sides of the knife shafts feed mechanisms.

33; A machine of the class described having, in combination, skiving knives spaced apart in three directions, vertically, from side to side of the'machine and from back to. frontof the machine, a feed mechanism for each knife, means for rotating said knives and feed mechanisms, and supporting means for the feed mechanisms constructed and arranged to permit said-mechanisms to be swung away from the knives to facilitate grinding of the knives as well as removal and replacement thereof.

34:. A machine of the class described having, in combination, two rotary skiving knives, feed mechanisms one for each knife comprising a feed'roll and a feed disk, rotary shafts upon which said rolls and disks are mounted, and bearings for said shafts, one of the bearings for the shaft of the disk of one feed mechanism'being rigid with'one of the bearings for the shaft of the roll of the other mechanism.

35. A machineof the class described, hav ing, in combination,-two skiving knives, feed rolls located to cooperate with said knives, means for rotating the knives, means for r0- tating one feed roll, means connecting the feed rolls to drive .one from the other, and a support for the rolls movable toward and from the knives.

86. A machine of the class described having, in combination, two skiving knives, a feed roll and a cooperating feed disk for each knife, means for rotating the knives, means for rotating one of the feed rolls,

means connecting the'driven feed' roll with the other feed roll and the feed disks torotatesaid other roll and disks,and a support for the rolls movable toward and from the knives,

j 37. The combination with, a rotary disk knife, ofa member comprising ,two legs .eX- tending'into proximity to said knife, one of said legs comprising a hingedsection which may be lifted when desired to permit a sharpening tool to be applied to said knife.

38. A machine of the class describedhaving, in combination, a skiving knife mounted on the frame of the machine, a supplementary frame pivoted to the main frame, and a feed roll and feed disk mounted on said supplementary frame.

39. A machine of the, class described having, in combination, skiving mechanism, feed mechanism, a driving frame angularly and bodily movable with respect to' the frame of the machine, driving means car ried by the, driving frame, and means for transmitting power from the driving-means to the skiving and feed mechanisms.

40. A machineofthe class described having, in combination, skiving mechanism,

feed mechanism, adriving frame located in the rear of said mechanisms, driving means carried by the driving frame, belts connecting the driving means with theskivingae feed mechanisms, and means. for adjusting said driving frame bodily and: angularly with respect to the frame of'the machine.

41 A machine of the class described having, in combination, a skiving knife, means for feeding flexible materialpast said knife, a bracket by which said knife is carried, a slideblock to which said.bracket is pivoted, means for moving the bracket about the pivot to vary the angle of the knife, a second slide-block upon which .sa-idlfirst-men-.

tioned slide-block is mounted, and ,means for adjusting said slide-blocks.

In testimony whereof, I have signed my name to this specification. I V s r e r NEWELLV. DYER.

Copies of this-patent may be, obtained for five cents each, by addressing the Commissioner of gatent Washington, I). G.

improvement in Skiving-Machines, tion requiring correction as follows: Page 5, line 94,

arranged insert the Word each; and that the said Letters Patent should be read Signed and sealed this 9th day of December, A. D., 1919.

M. H. COULSTON, Acting Commissioner qf Patents.

[SEAL] Cl. 69l6. 

